Hand air-pump.



PATENTEIT MAR. 21, 190,5.

G. E. cbRD A-U. HAND AIR PUMP.

APPLICATION FILED PEBJ'I, 190i ATTORNEY 3 life 785,154.

. UNITED STATES Patented March 21, 1905.

PATENT OFFI E.

. HAYNIJAIR-PUMP.

SPECIFICATION forming part of Letters Patent No. 785,154, dated March21, 1905;

Application in February 17,1904. serial no. 194,044.

To all whom it mty concern:

Be it known that I, GAs'roN CORDEAU, a

citizen of the United States, and a resident of New Yorkcity. in thecounty of Kings and State of New York, have invented certain new anduseful Improvements in Hand Air-Pumps,-

of which'the following is a specification.

My Invention relates to hand-pumps for in- Hating pneumatic tires ofwagons, automoduce acompact pump which will occupy-a biles, and thelike, the object being to pro -small space when folded or closed.

My invention is shown in the accompanying Illustrations, in which Figure1 is an elevation of myimproved pump, partly. n; section, .folded. Fig.21s a similar view, the handle showing the stirrup being folded and'thestirrup open. Fig. 3'is a centralsectional detailed'view of the handleat right angles j-to'pump-rod ready for pumping. Fig. 4 is a-s'imilarview, the ban dle being folded and screwed .down'on' the pump-cap. Fig.5 is 'aldetailed view, incen tral section, ofthe stirrup folded upagainst the pump. a

Similar reference-numbers refer tosimilar parts in the several views.

The pump consists of the'usual cylinder 1,

rod 2, and plunger 3. The base 4-has a boss 5, havlng a passagetherethrough which connects with the tube 6.

O 7 is the usual 'male nipple, which is screwed 1nto the tire-valve.(Not shown.)

For convenience and compactness I proylde a socket 8 near the upper endof-the cylinder, mtowhich the nipple 7 is screwed when the pumps not inuse. '-Diametrically opposite the .boss -of the baseisafolding stirrup9, which is hinged. near the lower end. .A flat spring 10 is fastened onthe stirrup, vthe free endpressing against the socket 11, on which the;stirrup articulates When folded,'the

spring presses against the outer vertical flat side of the socket, thuskeepingthe stirrup against the pump by its pressure, and .Whenthe-stirrup is moveddown or opened the 1 spring; presses against. thebottom of the socket, and thereby keeps the stirrup open and ready toreceive the foot, by which the pump 1s held-during the period of'pumping. I

the socket- 8,

- The cap 12, which screws on the pump-cylinder, isprovided with anintegral nipple 13, having a male thread 14 at its upper end. The rod 2slides in the center of the nipple. The rod is" provided with a thread2' at its upper end. 17 is a bolt to fasten rod to handle 16. 1 I .18is'a. knurled bushing tapered outside toward the top, which bushing'isscrewed up or do'wn'on the rod 2 for the purpose: more fully hereinafterexplained.

The handle 16 is preferably cast'hollow, thecorebeing so arranged that'two- 'ppositely I placed projections 23 extend centrally some One endofth'e' distance within the handle. handle is provided witha femalethread 19, adapted to screw on the cap-nipple 14.

is a shoulder to act as a stop when handle is screwed down on thenipple.

- o On the inner or underside of the handleis a slot 21, extending at'firet parallel from the screw end, then widening out into a circularopening 22, and then end g manother ciropenings is seen in the severaldrawings and open, as shownin Fig. 3in detail, audit is --cular opening22, the latterbeing somewhat smaller in diameter than-the former, asshown p in Fig. 2. The-object of these connecting- .7 5

desired to fold a, the knurled; bushing is screweddown-on the rod justsuifieiently so- -that when the handle is folded or pivoted on the rod"the knurled edge of the bushing will pass through the opening 22 andpermit the v open end of the handle to be screwed into place on thecap-nipple.

The operation, which has ,been partly'de-' scribed 'hereinbefore, is asfollows; To 'usethe pump, unscrew the handle from lnipple 1.3,

(See Fig. '2.) The taper partof the bushing is screwed up into turn itto a position at "right angles to the rod, and advance'busliing- '18 tohold handle in place, unfold stirrup, unscrew the male.

nipple 7 from. its socket,eonnectitwiththe wagon-tire-valve,'- (notshown) and operate the sliding plungerrod by means of the bandle, asusual. When a suflieient pressure-1s had inthetire, unscrew nipple,replace it in back oil the bushing 18, fold handle, and when it iscentral or on a line with the rod screw it down on the cap-nipple. Foldup the foot-stirrup, and the pump can be laid at the back of the seatunder the cushion, orit will lie in any corner without occupying muchmore room than the cylinder of the pump would. a

The securing of the handle in the position shown in Fig. 2 not onlyrenders the pump more compact, but prevents the rod 2 from beingaccidentally drawn out when the pump is not in use, and this feature isof importance, as if the rod should he accidentally drawn out or jarredout, so as to project from the cylinder, it would be in dangerot' beingbent, thus rendering the pump useless.

Having fully described my invention, what 1 claim as new, and desire tosecure by Letters Patent of the United States, is p 1. In anair-pressure pump, afolding handle pivotally mounted on the plunger-rod,said handle being appropriately slotted on its lower side, and anadjustable bushing mounted on said plunger-rod to engage said handle,all constructed substantially as described.

tached to the piston-rod, means for securing" the handle in a positionat right angles to the rod, and means for attaching the handle to thecylinder when the handle is arranged in alinement with the rod. 7

4:. In a pump, the combination with a cyliuder, a piston and piston-rod,of a handle secured to the piston-rod and means for attaching the handleto the cylinder.

Signed at'New York, in the county of- New York, and State of New York,this 28th day of January, A. D. 1904:.

GASTON E. CORDEAU.

Witnesses: I I

WILLIAM A. HOSCHKE, RoBT. W. WARD.

